Incorporation of palm oil polyol in shape memory polyurethane

Implication for development of cardiovascular stent

Syazana Ahmad Zubir, Norshahli Mat Saad, Farah Wahida Harun, Ernie Suzana Ali, Sahrim Ahmad

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Shape memory polyurethanes (SMPU) are one of the advanced materials that have potential applications in the field of biomedical particularly vascular stent. This paper studies the effect of incorporating palm oil polyol (POP) up to 40% molar ratio in place of petroleum-based polyol in the preparation of SMPU due to environmental concern. Polycaprolactone diol was utilized as the soft segment while 4,4'-diphenylmethane diisocyanate and 1,4-butanediol as the hard segments. The SMPU was prepared using two-step prepolymer method, and the fabricated samples were characterized to study the effect of POP on the thermal properties, tensile, and shape memory behavior of polyurethane. The results obtained have shown that SMPU with incorporation of POP showed good shape fixity (100%) and elongation at break (245%) up to 20% molar ratio of POP. The presence of dangling chains of fatty acid in POP was believed to enhance the flexibility of SMPU molecular chains by acting as a plasticizer. On the other hand, the shape recovery of SMPU remains high even at 40% molar ratio of POP, and the thermal stability of SMPU increased with the addition of POP. It is proposed that the synthesized POP-based SMPU is a suitable candidate for cardiovascular stent as they possessed desired thermal, mechanical, and shape memory properties.

Original languageEnglish
JournalPolymers for Advanced Technologies
DOIs
Publication statusAccepted/In press - 1 Jan 2018

Fingerprint

Palm oil
Stents
Polyurethanes
Polyols
Shape memory effect
polyol
palm oil
Plasticizers
Polycaprolactone
Petroleum
Fatty acids
Elongation
Thermodynamic stability
Fatty Acids
Thermodynamic properties
Crude oil
Recovery

Keywords

  • Crystallinity
  • Palm oil polyol
  • Polycaprolactone diol
  • Polyurethane
  • Shape memory properties

ASJC Scopus subject areas

  • Polymers and Plastics

Cite this

Incorporation of palm oil polyol in shape memory polyurethane : Implication for development of cardiovascular stent. / Ahmad Zubir, Syazana; Mat Saad, Norshahli; Harun, Farah Wahida; Ali, Ernie Suzana; Ahmad, Sahrim.

In: Polymers for Advanced Technologies, 01.01.2018.

Research output: Contribution to journalArticle

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